Way back in 2012, I wrote a post about potential CSS anti-patterns called Code Smells in CSS. Looking back on that piece, I still agree with all of it even four years later, but I do have some new things to add to the list. Again, these aren’t necessarily always bad things, hence referring to them as code smells: they might be perfectly acceptable in your use case, but they still smell kinda funny.

Lots to learn here. I feel horrible saying this, but I’m guilty. I’m guilty of at least two of these. I know, embarrassing. But hey! Can’t let it get me down, we’re all trying to improve.

A real easy one to get better with is minimizing the amount of shorthand syntax you use. Harry focuses on background, but margin and padding should be avoided too unless you’re doing it intentionally.

// Don't do this!.class-name{background:#fff;margin:0010px;padding:0005px;}// Do this!.class-name{background-color:#fff;margin-bottom:10px;padding:5px10px;// You're doing something specific with this one.}

Something small like this can save so much time. Really though, all of Harry’s tips will save you, your co-workers, or whoever else maintains the code you write, a lot of time.